Yeah but apart from SBCL, Viaweb, Hacker News, Emacs, Clojure, Scheme, Racket, g...

dang · 2026-07-09T20:37:05 1783629425

...booleans, conditional expressions, first-class functions, lambdas, closures, eval...

AnimalMuppet · 2026-07-09T21:38:10 1783633090

Booleans? I think some guy named Boole might have prior art...

(Yeah, OK, he didn't have a programming language...)

dang · 2026-07-09T22:37:20 1783636640

booleans as values of course.

arguably redundant since GP did say symbolic communication, but Lisp had T before Algol 60 came out